Okay, so totally my fault, did not read docs beforehand to find that multiple version upgrade is not supported.
Had 15.0.2 installed; and tried to upgrade to 17.
fpm_1 | Initializing nextcloud 184.108.40.206 ... fpm_1 | Upgrading nextcloud from 220.127.116.11 ... fpm_1 | Initializing finished fpm_1 | Nextcloud or one of the apps require upgrade - only a limited number of commands are available fpm_1 | You may use your browser or the occ upgrade command to do the upgrade fpm_1 | Set log level to debug fpm_1 | Turned on maintenance mode fpm_1 | Exception: Updates between multiple major versions and downgrades are unsupported. fpm_1 | Update failed fpm_1 | Maintenance mode is kept active
Then tried to set it to v16, but that fails to start:
fpm_1 | Can't start Nextcloud because the version of the data (18.104.22.168) is higher than the docker image version (22.214.171.124) and downgrading is not supported. Are you sure you have pulled the newest image version?
Same issue happens if I try to go back to previous version that was used (15). Config file lists version 15 as the current one.
What steps should I take to take care of this issue?